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Test Cases with RTC Timestamp Variables

Overview​

This document explains the test cases that set RTC timestamp variables (lastWeatherUpdate and lastTransportUpdate) before running tests to verify the sleep duration calculation logic.

Changes Made​

1. Made RTC Timestamp Methods Public​

File: include/util/timing_manager.h

Moved the following methods from private to public section to allow tests to set and verify timestamps:

// RTC timestamp management (public for testing)
static uint32_t getLastWeatherUpdate();
static uint32_t getLastTransportUpdate();
static void setLastWeatherUpdate(uint32_t timestamp);
static void setLastTransportUpdate(uint32_t timestamp);

2. Updated setUp() Function​

File: test/test_timing_manager/test_sleep_duration.cpp

Added reset of RTC timestamp variables in setUp():

void setUp(void) {
    // ...existing config setup...

    // Reset RTC timestamp variables to zero (no previous updates)
    TimingManager::setLastWeatherUpdate(0);
    TimingManager::setLastTransportUpdate(0);
}

New Test Cases​

1. test_with_previous_weather_update()​

Scenario: Weather was updated 30 minutes ago

  • Sets lastWeatherUpdate to 30 minutes ago
  • Configures 1-hour weather interval
  • Expected: Should sleep ~30 minutes (remaining time until next update)
time_t now = time(nullptr);
uint32_t thirtyMinutesAgo = (uint32_t)now - (30 * 60);
TimingManager::setLastWeatherUpdate(thirtyMinutesAgo);

Output:

Sleep duration with 30min ago weather update: 1800 seconds (~30 minutes)

2. test_with_previous_transport_update()​

Scenario: Transport was updated 2 minutes ago

  • Sets lastTransportUpdate to 2 minutes ago
  • Configures 5-minute transport interval
  • Expected: Should sleep ~3 minutes (5 min - 2 min = 3 min remaining)
time_t now = time(nullptr);
uint32_t twoMinutesAgo = (uint32_t)now - (2 * 60);
TimingManager::setLastTransportUpdate(twoMinutesAgo);

Output:

Sleep duration with 2min ago transport update: 180 seconds (~3 minutes)

3. test_with_both_previous_updates()​

Scenario: Both weather and transport have previous updates

  • Weather updated 1 hour ago (2-hour interval = 1 hour remaining)
  • Transport updated 2 minutes ago (5-minute interval = 3 minutes remaining)
  • Expected: Should sleep until nearest update (transport in ~3 minutes)
uint32_t oneHourAgo = (uint32_t)now - (60 * 60);
TimingManager::setLastWeatherUpdate(oneHourAgo);

uint32_t twoMinutesAgo = (uint32_t)now - (2 * 60);
TimingManager::setLastTransportUpdate(twoMinutesAgo);

Output:

Sleep duration with both previous updates: 180 seconds (~3 minutes)
  Weather updated: 1 hour ago (interval: 2 hours)
  Transport updated: 2 minutes ago (interval: 5 minutes)

4. test_weather_update_overdue()​

Scenario: Update is overdue (interval already passed)

  • Weather updated 3 hours ago
  • Interval is 2 hours (overdue by 1 hour!)
  • Expected: Should wake up immediately (minimum 30 seconds)
uint32_t threeHoursAgo = (uint32_t)now - (3 * 60 * 60);
TimingManager::setLastWeatherUpdate(threeHoursAgo);

Output:

Sleep duration when weather update is overdue: 30 seconds

5. test_verify_timestamp_setters()​

Scenario: Verify setter/getter methods work correctly

  • Sets timestamps using setters
  • Retrieves using getters
  • Expected: Values match what was set
TimingManager::setLastWeatherUpdate(testTimestamp);
uint32_t retrieved = TimingManager::getLastWeatherUpdate();
TEST_ASSERT_EQUAL_UINT32(testTimestamp, retrieved);

Output:

Timestamp setters/getters verified successfully

Test Results​

11 Tests 0 Failures 0 Ignored
OK

All tests pass successfully! ✅

How to Use in Your Tests​

Pattern 1: No Previous Update (First Run)​

TimingManager::setLastWeatherUpdate(0);
TimingManager::setLastTransportUpdate(0);
// Device will update immediately (minimum sleep)

Pattern 2: Recent Update​

time_t now = time(nullptr);
uint32_t recentTime = (uint32_t)now - (5 * 60); // 5 minutes ago
TimingManager::setLastWeatherUpdate(recentTime);
// Device will wait for remaining interval time

Pattern 3: Overdue Update​

time_t now = time(nullptr);
uint32_t oldTime = (uint32_t)now - (10 * 60 * 60); // 10 hours ago
TimingManager::setLastWeatherUpdate(oldTime);
// Device will update immediately (minimum sleep)

Debugging Tips​

  1. View timestamps during tests:

    printf("Current time: %u\n", (uint32_t)time(nullptr));
    printf("Last weather: %u\n", TimingManager::getLastWeatherUpdate());
    printf("Last transport: %u\n", TimingManager::getLastTransportUpdate());

  2. Set specific time scenarios:

    // Test midnight rollover
    // Test weekend transitions
    // Test active hours boundaries

  3. Use CLion debugger:

    • Set breakpoints in test functions
    • Inspect sleepDuration variable
    • Step through getNextSleepDurationSeconds() logic

Production Impact​

✅ No breaking changes - Making the timestamp methods public only adds visibility for testing. Production code continues to work exactly as before.

✅ ESP32 build verified - Production firmware still compiles and runs successfully.